Amarine-made 12v Water Pressure Diaphragm Pump 18.9 L/min 5.0 Gpm 60 Psi - Caravan/rv/Boat/Marine - AMDP1-050-060-52 The patented design delivers smoothconsistent flow at all ranges of operation, while drawing low current. The balanced motor design incorporates precision ball bearings for long life, motor is equipped with an integral thermal breaker. All marine duty pumps have sealed switches and are finished with a Electro Coating to inhibit corrosion. Marine duty fresh water pumps are enclosed to prevent incidental moisture from entering and when installed correctly, Marine Duty Fresh Water Pumps provide years of quiet operation. A Amarine Made pump in combination with a low back pressure water system can exceed all expectations.